188 



(4) That macroscopical and microscopic methods for examining drug products be 

 studied during the coming year. 



Adopted. 



(5) That microchemical methods for the identification of alkaloids in drug products 

 be further studied. 



Adopted. 



~ (6) That other microchemical methods be tested to determine the possibility of 

 thus identifying medicinal plant principles. 



Adopted. 



(7) That pharmacological methods for testing the quality of drug products be 

 investigated. 



Adopted. 



(8) That two associate referees on medicinal plants and drugs be appointed for the 

 ensuing year. 



Adopted. 



SUGAR. 

 It is recommended 



(1) That the question of the influence of precipitants upon the polarization of 

 sugars be further investigated. 



Adopted. 



(2) That the question of methods of determining moisture or dry substance be 

 further investigated, giving special attention to the method suggested by W. D. 

 Home and reported in the proceedings of 1907 (Bui. 116, pp. 22-23). 



Adopted. 



(3) That the method of determining dry substance by means of a refractometer and 

 Geerligs' table be adopted provisionally. 



Adopted. 



(4) That under the method for the determination of copper contained in the pre- 

 cipitate of cuprous oxid, pp. 51-53, Bulletin 107, Revised, limit section (6), "Direct 

 Weighing of Cuprous Oxid," page 53, by the following insertion: "This method 

 should not be used in determining reducing sugars in commercial products, as other 

 substances are precipitated along with the cuprous oxid. In these products the 

 copper of the cuprous oxid should be determined direct by titration as in Low's 

 method (Bui. 107, Rev., p. 241) or as cupric oxid." 



Referred to the referee for 1908-9 for investigation, with the further recommenda- 

 tion that the term "commercial products" be more closely defined. 



FOODS AND FEEDING STUFFS. 

 It is recommended 



That the referee for 1908-9 take up the question of acidity in cattle feeds and con- 

 sider how the results obtained by current methods can be applied to agricultural 

 problems. 

 Adopted. 



DAIRY PRODUCTS. 

 It is recommended 



(1) That the following methods given in the referee's report (p. 153) for the analysis 

 of condensed milk be adopted as official, namely: (1) Preparation of sample; (2) total 

 solids; (3) ash; (4) protein; and (5) lactose. 



These methods were referred to the referee for 1908-9 for final recommendation and 

 action by the association as to their adoption as official. 



(2) That the methods for the determination of sucrose in condensed milk by inversion 

 with citric acid and by inversion with hydrochloric acid be investigated by the 

 referee for the ensuing year. 



Adopted. 



